diff --git a/vcs/src/main/java/one/nem/lacerta/vcs/LacertaVcs.java b/vcs/src/main/java/one/nem/lacerta/vcs/LacertaVcs.java
index 29125361..46640d37 100644
--- a/vcs/src/main/java/one/nem/lacerta/vcs/LacertaVcs.java
+++ b/vcs/src/main/java/one/nem/lacerta/vcs/LacertaVcs.java
@@ -9,6 +9,8 @@ public interface LacertaVcs {
 
     public void deletePage(int index);
 
+    public void createDocument(String documentId);
+
     // debug
     public void printLog();